1. Difficulty Estimator:
https://www.bitrawr.com/difficulty-estimator
2. Difficulty Chart:
https://www.coinwarz.com/mining/bitcoin/difficulty-chart
3. Hashrate Charts:
https://www.coinwarz.com/mining/bitcoin/hashrate-chart
https://bitinfocharts.com/comparison/hashrate-btc-ema14.html#3y
News
1) Marathon Mining buys 12Eh worth of ASICs:
https://twitter.com/WolfieZhao/status/1476053392761839616?s=20
2) SlushPool goes 24-hours with out a block:
https://braiins.com/blog/bitcoin-mining-pools-luck-shares-estimated-hashrate
3) Bitcoin turns 13:
https://www.cnbc.com/2022/01/03/bitcoin-launched-13-years-ago-today-8-milestones-from-the-past-year.html
4) Bitcoin Magazine starts series on Home mining:
https://bitcoinmagazine.com/business/home-bitcoin-mining-tips-from-an-expert
5) Kazakhstan kills the internet:
https://www.cnbc.com/2022/01/06/kazakhstan-bitcoin-mining-shuts-down-amid-fatal-protests.html
CBECI map: https://ccaf.io/cbeci/mining_map
Developments
1) @BigCohooNah leaves Braiins and starts working at Compass mining:
https://twitter.com/BigCohoo/status/1475460676630065154?s=20
2) @Marketsbylili publishes a brief intro to immersion:
https://compassmining.io/education/immersion-bitcoin-mining-introduction/
3) @CoinHeated to start accepting credit cards for ASICs, extensive verification.
https://twitter.com/CoinHeated/status/1474822154223034377?s=20
4) Miner Daily Article:
https://minerdaily.com/2021/how-are-bitcoins-difficulty-and-hash-rate-calculated/
Home Miner Hall of Fame
1) @BTCplumber DIY BlackBox:
https://twitter.com/BTCplumber/status/1476982017501720576?s=20
2) @BarclayTWillia1 Home immersion:
https://twitter.com/BarclayTWillia1/status/1477158723915235328?s=20
3) @albertahodl ASIC enclosure:
https://twitter.com/albertahodl/status/1478113320745926658?s=20
4) @DaddyBTC_pleb ASIC enclosure:
https://twitter.com/DaddyBTC_pleb/status/1478474872523268097
5) @Bitcoin__Dragon immersion tank:
https://twitter.com/Bitcoin__Dragon/status/1478840286692265984?s=20
Privacy Implications
1) 2 million user's data posted for sale in log4j hack:
https://twitter.com/ErgoBTC/status/1476581704248614912?s=20
https://www.bleepingcomputer.com/news/security/fintech-firm-hit-by-log4j-hack-refuses-to-pay-5-million-ransom/